<html>
  <head>
    <meta charset="UTF-8" />
    <title>Lesson 05-添加多个图层</title>
    <link rel="stylesheet" href="../node_modules/leaflet/dist/leaflet.css" />
    <link rel="stylesheet" href="styles.css" />
    <script src="dist/bundle.js"></script>
  </head>
  <body onload="load()">
    <div id="map"></div>
    <div class="panel">
        <div class="item">
          <input type="checkbox" id="check4" checked />
          <span style="margin-left: 5px; font-size: 12px">四环</span>
        </div>
        <div class="item">
          <input type="checkbox" id="check5" checked />
          <span style="margin-left: 5px; font-size: 12px">五环</span>
        </div>
      </div>
  </body>
</html>